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HIGH severity

CVE-2021-36042 — project-community-edition

HIGH

CVE-2021-36042 is a high-severity (CVSS 7.2) Improper Input Validation vulnerability in magento/project-community-edition. A fix is available for magento/project-community-edition — see the affected versions and patch details below.

Magento executes code via the API File Option Upload Extension

Also known asGHSA-6cwv-wj7v-73xp
Published
Updated
Affected
5 pkgs
Patched
2 / 5
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs85th percentile — riskier than 85% of all scored CVEsHighest risk
1.97%2.85%3.73%4.61%4.1%2.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

5 pkgs affected
🐘magento/project-community-edition🐘magento/community-edition🐘magento/community-edition🐘magento/community-edition🐘magento/community-edition

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability in the API File Option Upload Extension. An attacker with Admin privileges can achieve unrestricted file upload which can result in remote code execution.

Affected Packages

5 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmagento/project-community-editionall versionsNo fix
🐘Packagistmagento/community-editionall versionsNo fix
🐘Packagistmagento/community-edition≥ 2.4.2-p1&&< 2.4.2-p22.4.2-p2composer require magento/community-edition:^2.4.2-p2
🐘Packagistmagento/community-editionall versionsNo fix
🐘Packagistmagento/community-editionall versions2.3.7-p1composer require magento/community-edition:^2.3.7-p1

Affected Products

2 products · 6 configurations
Application
adobe commerceadobe
≥ 2.4.0 && ≤ 2.4.2
1 version
2.4.2
Application
magento open sourceadobe
≥ 2.4.0 && ≤ 2.4.2
1 version
2.4.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for magento/project-community-edition, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    A fix is available for CVE-2021-36042; check the affected-versions list above or the advisory for the patched release of magento/project-community-edition, then make sure no transitive dependency still pins the vulnerable range.

  3. Workarounds

    Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.

Frequently Asked Questions

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability in the API File Option Upload Extension. An attacker with Admin privileges can achieve unrestricted file upload which can result in remote code execution.
O3 Security · Impact-Aware SCA

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CVE-2021-36042: project-community — Fixed in 2.4.2-p2